Home / 128,115,569.72-176,799,656.58-69,378,336.02

Finding the Fourth Proportional to 128,115,569.72, 176,799,656.58 and 69,378,336.02

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Solution

The fourth proportional to 128,115,569.72, 176,799,656.58 and 69,378,336.02 is: 95,742,195.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115,569.72 : 176,799,656.58 = 69,378,336.02 : x
  2. Step 2: Convert to fraction form
    128,115,569.72/176,799,656.58 = 69,378,336.02/x
  3. Step 3: Cross multiply
    128,115,569.72x = 176,799,656.58 × 69,378,336.02
  4. Step 4: Simplify right side
    128,115,569.72x = 12,266,065,982,427,844
  5. Step 5: Solve for x
    x = 12,266,065,982,427,844/128,115,569.72
  6. Step 6: Final answer
    x = 95,742,195.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.